23rd of June 2025: Long-eared Gymnure
We’re back in the mammal zone with the Long-eared Gymnure (Otohylomys megalotis). They are thus far only known from the Khammouan Province in Central Laos [1].
One of their key identifying features are their big ears. Their species name is derived from combining mega and otos, the latter being the Greek for ear [2], and when a few years later they became the one member of the genus Otohylomys (they were first assigned Hylomys), they essentially named the genus “ear Hylomys” as well [3].
Aside from that, you can also distinguish them from other Hylomys by their long skull and tail [2]. Their hair is also longer than that of regular gymnures and lacks a downy layer. Instead they have thin convoluted hair bases which create a layer of insulating air above their skin [4].
Not much is known for certain about their engagement with their environment, but based on their bodies, they are assumed to be limestone-karst specialists, so adapted best to rocky limestone areas where they come from [1]. The long whiskers around their nose are especially important for navigating such landscapes [4].
Sources: [1] [2] [3] [4] [Image]